Home ANRITSU | Mobile Wireless Communications Measuring Instruments Site Master Ultraportable Cable and Antenna Analyzer S331P
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ANRITSU | Mobile Wireless Communications Measuring Instruments

Site Master Ultraportable Cable and Antenna Analyzer S331P

The Anritsu S331P is an ultraportable, USB-powered cable and antenna analyzer designed for technicians who need a lightweight, fast, and cost-effective RF line sweep tool in the field. Supporting frequency ranges from 150 kHz to 4 GHz or 6 GHz, the S331P is ideal for LTE-U, public safety networks, DAS installation, and low-frequency radio communications. Compact and battery-free, it connects seamlessly to Windows tablets, laptops, or desktops..

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The S331P extends the trusted Site Master capabilities into an ultra-compact format, making it ideal for field professionals needing RF diagnostics without bulky equipment. It supports line sweep testing across a wide frequency spectrum—from legacy radio bands at 150 kHz to modern LTE-U bands up to 6 GHz.

Unlike traditional analyzers, the S331P operates without batteries or screens, using a connected Windows device as the display and control interface. This “headless” design drastically reduces weight and cost, while still delivering the performance expected of the Site Master series.

Its Smart Aligner app compatibility allows users to generate comprehensive site closeout reports by integrating antenna alignment and sweep data—streamlining documentation for contractors and network teams.

Whether for indoor DAS, tower maintenance, or LTE field testing, the S331P is a robust, portable, and highly efficient RF cable analyzer.

  • Ultraportable Design: Pocket-sized, headless unit—powered directly by USB from a PC or tablet.

  • Wide Frequency Range: Two models available—150 kHz to 4 GHz and 150 kHz to 6 GHz.

  • No Battery Required: Operates entirely via USB from Windows 7/8/10 laptop, tablet, or desktop.

  • Fast Sweep Speed: Enables rapid diagnostics and efficient workflows in the field.

  • Smart Aligner Compatibility: Integrates with Multiwave tools and Android app for site closeout reports.

  • LTE-U Support: Suitable for 5 GHz unlicensed spectrum and public safety bands.

  • Software Toolbox Support: Access to powerful data analysis and reporting software.

  • Ideal for Multiple Roles: Serves wireless operators, DAS contractors, and public safety network teams.

  • Low Frequency Support: Measurements from 150 kHz for legacy and radio communication systems.

  • Cost-Effective: Delivers high-end Site Master capabilities in a compact, economical form factor.

Model Frequency Range Power Source Sweep Speed Interface Use Case
S331P (4 GHz) 150 kHz – 4 GHz USB-powered (Windows PC) Fast USB to laptop/tablet/desktop Public safety, DAS, LTE, broadcast
S331P (6 GHz) 150 kHz – 6 GHz USB-powered (Windows PC) Fast USB to laptop/tablet/desktop LTE-U, Wi-Fi, 5 GHz spectrum testing

 

  • Weight: < 1 lb (headless device)

  • Display: External PC or tablet (Windows 7/8/10)

  • Reporting: Compatible with Smart Aligner Android App

  • Software: Anritsu Software Toolbox for analysis and export

  • Alignment Support: Works with Multiwave tools